1, letterpress printing paper: referred to as letterpress paper, product packaging in the form of reel and lithographic points. Relief paper is weighed from 50 grams to 80 grams per square meter. The article number is divided into special number, number one and number two. No.1 and No.1 letterpress paper are used for printing advanced books, and No.2 letterpress paper is mainly used for printing general books, textbooks, and periodicals.
2, newsprint: also known as white newspapers, packaging forms are also reel and lithographic points. The ration of newsprint is about 51 grams, which is mainly used for printing newspapers and periodicals.
3, offset printing paper: referred to as offset paper, quantitative 60-180 grams, with double-sided offset paper and single-sided offset paper. One of the 70-120 grams of double-sided offset paper is the most widely used. Double, single-sided offset paper product number has a special number, number one, two three. No.1 and No.1 double-sided offset paper are used for printing advanced color offset printing products; No. 2 double-sided offset printing paper is used for printing general color prints; single-sided offset paper is mainly used for printing posters and New Year pictures.
4, copper plate paper: copper plate paper coating a layer of coating liquid on the original paper, made by super calendering. Quantitative 90-250 grams, double-sided copper plate and single-sided coated paper. There are three types of product number: No.1, No.2 and No.2. Extra thickness coated paper is used to print 150 grams of exquisite products with Internet lines; No. 1 coated paper is used for printing products with 120-150 network cables; No. 2 coated paper can be used for products with 120-gram or less of network cables. Coated paper is not resistant to folding and it is extremely difficult to recover once creases appear.
5, book paper: quantitative 80-120 grams, mainly for books and magazines for cover use. The cover paper is available in a variety of colors to suit the needs of printing various covers.
6, dictionary paper: divided into two, two, quantitative 25-40 grams, mainly for the printing of dictionary, manual use. Dictionary paper is hygroscopic and wrinkles when slightly dampened.
7, copy paper: copy is a English transliteration, meaning that copy. Copy paper is mainly used for printing multiple orders, suitable for copying and typing. Because the copy paper is translucent, in the printing of books and books, the main text is used to protect the pages of the portrait page.
8. Board paper: paper with a basis weight of 250 g/m2 is called board paper or cardboard. There are many types of board paper, and board paper used in book printing is mainly used for making cover pressboards for hardcover bookcases and envelope pressboards for making hardcover books and book covers. The paperboard is lithographic paper. The thickness of the cover pressboard is generally divided into 1 (mm), 1.5 (mm) and 2 (mm). There are six types of envelope pressboards: 1 (millimeter), 1.2 (millimeter), 1.4 (millimeter), 2 (millimeter), 2.5 (millimeter), and 3 (millimeter).
